Lock.



D. s. S ENSENIG.

LOCK.

APPLICATION FILED JAN. 28,1911.

1,000,444, Patented Aug. 15, 1911.

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COLUMBIA PLANOGRAP" O0. WASHINGTON. D. C.-

D. S. SENSENIG.

LOCK.

APPLICATION FILED JAN.28,1911.

1,000,444, I Patented Aug. 15, 1911.

3 SHEETS-SHEET 2.

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D. S. SENSENIG.

LOOK.

APPLICATION FILED JAN. 28,1911.

1 ,OOO,44=4;, Pate nted Aug. 15, 1911.

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H co. WASHINGTON v c UNiT DAVID S. SENSENIG, OF NORRISTOWN, PENNSYLVANIA.

LOCK.

Application filed January 28, 1911.

To all whom it may concern:

Be it known that I, DAVID S. SENSENIG, a citizen of the United States, residing at Norristown, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Locks, of which the following is a speclfication.

My invention relates to improvements in looks, more particularly to a combined lock and latch designed for doors, the object of the invention being to so construct the device that the latch bolt has the double function of a latch and a lock, improved mechanism being provided for controlling the movement of said bolt by the inner and outer knobs.

A further object is to provide improved means for preventing the operation of the latch bolt by the outer knob, requiring the insertion of the key in said knob to prevent such operation.

A further object is to provide an improved bolt which will preclude any possibility of the withdrawal of the bolt by a tool inserted between the door and the jamb.

A further object is to provide improved mechanism operated from the inner side of the door to control the operation of the latch by means of the outer knob.

With these and other objects in view, the invention consists in certain novel features of construction and combination and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in horizontal section illustrat ing my improvements. Fig. 2, is a view in section on the line 22 of Fig. 1. Fig. 3, is a view in section on the line 3-3 of Fig. 1. Fig. 4, is a view in elevation of the interior of the lock with the inner knob and escutcheon removed. Fig. 5, is a view similar to Fig. 3, but showing the parts in posit-ion to lock the outer knob against movement, and Figs. 6, 7, 8, 9, 10, and 11, are views illustrating various details of the lock.

1, represents the lock casing which is removably secured to the outer plate or escutcheon 2 by means of screws 3 screwed through the casing into lugs l on plate 2.

The inner plate or escutcheon 5 is secured to casing 1 by means of screws 6.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Serial No. 605,146.

The casing is adapted to be mortised into a door 7, the plates or escutcheons 2 and 5 being larger than the casing, so as to form a neat finished appearance to the lock.

8, is an end plate secured to the casing 1, and adapted to move against the face of a keeper 9 secured in a jamb 10, as is customary with locks of this character.

11, represents my improved latch bolt which is guided in .its longitudinal movement through openings 12 and 13 in a partition plate 14, and end plate 8 respectively, the partition plate 11 being preferably integral with casing 1.

One face of the latch bolt 11 is recessed to accommodate two crossed and pivoted pawls l5 normally covered by a plate 16 secured by screws 17 to the latch bolt 11. These .pawls are pivotally secured to the latch bolt at their ends, and between their ends at the point of crossing are provided with openings 18 through which a stud 19 on a rod 20 projects. Therod 20 extends through a longitudinal bore or opening in the bolt 11, said bore being of two diameters, and rod 20 having a reduced diameter at its outer end as shown. A removable plug 21 is screwed onto the end of rod 20, and projects beyond the outer beveled face of the bolt 11, so that when this bolt is moved inwardly, it will move the pawls 15 inwardly as will be hereinafter explained.

The rod 20 is guided in a bracket 22, and a coiled spring 23 is positioned around the rod between bracket 22 and a cross bar 24: in the recessed portion of bolt 11, tending always to press the bolt 11 in its locking position, andalso exerting longitudinal pressure on the rod 20 to press the pawls 15 outward as shown in Fig. 2, so that they will effectually lock the bolt against inward movement. This locking of the bolt against inward movement is efi'ected by reason of the fact that the pawls engage the partition 14, and prevent inward movement of the bolt. This absolutely prevents any unauthorized moving of the bolt as for example, by the insertion of a piece of spring metal between the lock casing and the keeper, but does not interfere with the ordinary operation of the bolt either by its cam action when the door closes, as the part 21 also has a cam or beveled end, nor will these devices interfere with the ordinary withdrawal of the bolt by means of the rod 20, the first movement of the latter serving to draw inwardly said pawls within the confines of the bolt, so that it passes freely through the partition 14.

On the inner end of the rod 20, a recessed vided with oppositely projecting shoulders 26. These shoulders 26 are adapted to be engaged by cross heads 27 and 28, cross head 27 being located at one side of the plate 25, and cross head 28 at the other side of the plate. These cross heads are adapted when turned in either direction to move the locking bolt longitudinally, but there is no connection whatever between these cross heads and they are adapted to operate in dependently as will hereinafter appear.

Cross head 27 is secured to the inner end of a journal 29, which latter is. mounted to turn in an opening 30 in escutcheon plate 2, and has the outer knob 31 secured thereon by means of a screw 32.

On the journal 29, inside of the casing, a barrel 33 is located which is normally locked to the journal by means of pin tumblers 34, movable in the tumbler casing 35. This tumbler casing turns ordinarily when the outer knob is turned, and its movement is limited by a curved plate 36, which is guided in a block 38 secured to the inner face of plate 2 by means of screws 37. The tumbler casing 35 therefore moves in the arc of a circle when it is locked to the journal 29, but the journal 29 and the knob 31 are made with recesses 39 and 40 respectively for the accommodation of a key (not shown) to aline the tumblers and permit the journal 29 to move independently of barrel 33.

Cross head 28 is provided with an enlargement 41, which is secured within a sleeve 42 mounted to turn in an opening or bearing 43 in the inner plate 5, and on this sleeve 42, the inner knob 44 is secured by means of a screw 45, said knob having a tubular passage 46 therethrough as shown.

Inside of the sleeve 42, a tube 47 is located and mounted to slide, and is rigidly connected by means of an arm 48 with the plate 36 above referred to, said arm 48 movable through an opening in sleeve 42. In other words, the tube 47, arm 48, and plate 36 constitute a locking member for the barrel '33, as will more fully hereinafter appear. The enlargement 41 has a shank 49 thereon projecting into tube 47, and receives one end of a coiled spring 50 housed within the tube 47. The other end of said coiled spring engages a shoulder or ring 51 fixed in the outer end of tube 47, and receiving the screw-threaded shank 52 of a push button 53 which is movable through the passage 46. The, tube 47 and its parts are t1." fore capable of movement longitudinally in sleeve 42 to position the plate 36 in either of its two positions, one position to lock barrel 33 against movement, and the other to permit a free movement of the barrel with the journal 39. To hold the .tube in both of these positions, an open plate 25 is fixed, and at its ends is pro'- frame 54 straddles the sleeve 42, and is provided with a tongue 55 which projects through an opening 56 in sleeve 42, and the frame 54 is provided with a screw-threaded pin 57 guided in a perforated ear 58 on plate 5, and adapted to receive a push button 59. The push button 59 projects up through the escutcheon and a coiled spring 60 normally holds the push button in its outward position, and the tongue 56 in its locking position, which is in a slot 61 in tube 47 holding the plate 36 in looking position. When this push button 59 is pushed inwardly, it will release the tube 47 and allow the spring 50 to force the tube outwardly and move the plate 36 to unlocked position.

The operation is as follows: With the parts as shown in Figs. 1, 2, 3, and 4, the bolt 11 may be withdrawn byturning either of the knobs. When the inner knob 44 is turned, sleeve 42 is compelled to turn, and the cross head 28 is rocked to move the bolt 11. When the outer knob 31 is turned, ournal 29 is turned turning with its barrel 33. The cross head 27 is therefore rocked by means of the journal 29, and the bolt 11 moved. It is to be understood that the bolt 11 may always be moved when plate 25 is moved, because stud 19 will draw inwardly the pawls 15. Any attempt, however, to force the bolt 11 inwardly will be prevented by these pawls as above explained. To lock the outer knob 31, push button 53 is forced inwardly to force the parts to the position shown in Fig. 5, the spring frame 54 serving to hold the parts in this position. Then the tube 47 is moved inwardly plate 36 will be moved so that its central notch 62 will receive arid hold the tumbler casing 35, preventing any movement of the barrel. The outer knob 31 cannot therefore turn, because it is fixed to the ournal 29, and the ournal is locked to the barrel by means of the pin tumblers. Hence in order to release the locking bolt from the outside. it is necessary to insert the proper key into the recesses 39 and 40 to aline the pin tumblers, and while the key is in the grooves or recesses, the outer knob may be turned as the journal 29 will revolve within the barrel 33. When the key is withdrawn, the pin tuniblers will immediately lock as before. This adjustment to lock the outer knob does not effect the operation of the bolt by the inner knob, and when it is desired to release the outer knob, it is simply necessary to force the push button 59 inwardly. This causes the frame 54 to release tube 47 when the spring 50 will return the tube and its parts to the position shown in Figs. 1, and 3.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination with a lock casing, of a latch bolt in said casing and projecting therethrough, means within the casing. for moving said bolt, a partition in the casing, locking pawls pivoted to said bolt, projecting beyond both edges of the bolt and adapted to engage the partition to hold the bolt against longitudinal movement, and said pawls moved to unlocked position by the operation of said first-mentioned means, substantially as described.

2. The combination with a lock casing, of a latch bolt in the casing, a partition in the casing, locking pawls pivoted to said bolt, projecting beyond both edges of the bolt and adapted to engage the partition to hold the bolt against longitudinal movement, and a plug projecting beyond the outer face of said latch bolt and adapted to move said pawls, substantially as described.

3. The combination with a lock casing, and a partition therein having an opening. of a sliding latch bolt movable through said opening, means in the casing'for moving said bolt longitudinally, a partition in the casing, locking pawls pivoted to said bolt, projecting beyond both edges of the bolt and adapted to engage the partition to hold the bolt against longitudinal movement, substantially as described.

4. The combination with a lock casing, and a partition therein having an opening, of a sliding latch bolt movable through said opening, means in the casing for moving said bolt longitudinally, and means on the bolt preventing longitudinal movement until the bolt is operated by said first-mentioned means, said bolt holding means comprising pivoted pawls adapted to project laterally from the bolt and engage said partition, substantially as described.

5. The combination with a lock casing, and a partition therein having an opening, of a sliding latch bolt movable through said opening, means in the casing for moving said bolt longitudinally, means on the bolt preventing longitudinal movement until the bolt is operated by said first-mentioned means, said bolt holding means comprising pivoted pawls adapted to project laterally from the bolt and engage said partition, and a plug projecting through the outer end of said bolt and adapted when moved inwardly to release said holding means, substantially as described.

6. The combination with a casing, and a partition in the casing having an opening therein, of a latch bolt mounted to slide in said opening, pivoted pawls on said bolt adapted to project laterally from the bolt and engage the partition preventing longitudinal movement of the bolt, an operating rod mounted to slide in the bolt, a stud on said rod engaging the pawls, and a spring on said rod normally moving the lug to a position to hold the pawls in looking engagement with the partition, substantially as described.

7. The combination with a casing, and a partition in the casing having an opening therein, of a latch bolt mounted to slide in said opening, pivoted pawls on said bolt adapted to project laterally from the bolt and engage the partition preventing longitudinal movement of the bolt, an operating rod mounted to slide in the bolt, a stud on said rod engaging the pawls, aspring on said rod normally moving the lug to a position to hold the pawls in looking engagement with the partition, and a removable plug secured to said rod and projecting through the outer end of said bolt, said bolt and said rod beveled at their outer ends, substantially as described.

8. The combination with a lock casing, of a latch bolt adapted to move therein, a partition in the casing, locking pawls pivoted to said bolt, projecting beyond both edges of the bolt and adapted to engage the partition to hold the bolt against longitudinal movement, substantially as described.

9. The combination with a lock casing, side plates secured to the casing. and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, knobs on said journal and sleeve, and means for locking one of said knobs against movement, substantially as described.

10. The combination with a lock casing, side plates secured to the casing, and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel on said journal, pin tumblers locking said barrel and journal together, said journal and said outer knob having recesses to receive a key to aline the tumblers and permit movement of the journal in the barrel, and means for holding the barrel against movement, sub stantially as described.

11. The combination with a lock casing, side plates secured to the casing, and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel on said journal, pin tumblers locking said barrel and journal together, said journal and said outer knob having recesses to receive a key to aline the tumblers and permit movement of the journal in the barrel, a plate having a notch therein adapted to engage the casing of said tumbler lock and hold the barrel against movement, and means within the inner knob controlling the movement of said plate, substantially as described.

12. The combination with a lock casing, side plates secured to the casing, and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel around said journal, an integral pin tumbler casing on said barrel, pin tumblers in said casing normally locking the barrel and journal together, said journal and knob having registering recesses for the reception of a key to aline the pin tumblers and allow the journal to move in the barrel, a locking plate in said casing having a notch to receive said tumbler casing and hold the barrel against movement, and means for moving said plate, substantially as described.

13. The combination with a lock casing, side plates secured to the casing, and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel around said journal, an integral pin tumbler casing in said barrel, pin tumblers in said casing normally locking the barrel and journal together, said journal and knob having registering recesses for the reception of a key to aline the pin tumblers and allow the journal to move in the barrel, a locking plate in said casing having a notch to recelve sald tumbler casing and hold the barrel agamst movement, a tube mounted to slide in the sleeve, an arm rigidly connecting -nal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel around said ournal, an integral pin tumbler casing in said barrel, pin tumblers in said casing normally locking the barrel and journal together, said journal and knob having registering recesses for the reception of a key to aline the pin tumblers and allow the journal to move in the barrel, a locking plate in said casing having a notch to receive said tumbler casing and hold the barrel against movement, a tube mounted to slide in the sleeve, an arm rigidly connecting said tube and said plate, said inner knob having a central passage for the accommodation of the tube, a push button on the end of said tube, a coiled springwithin the tube normally pressing said tube in a direction to release the plate from locked engagement with the tumbler casing, and means for holding the tube in posit-ion to maintain the plate in locked engagement with the tumbler casing, substantially as described.

15. The combination with a lock casing, side plates secured to the casing, and a bolt mounted to slide in said casing, of a journal mounted to turn in an opening in the outer plate, a sleeve mounted to turn in an opening in the inner plate and alining with said journal, cross heads on said journal and said sleeve at opposite sides of the bolt and adapted to move the bolt when either of said cross heads are turned, a barrel around said journal, an integral pin tumbler casing in said barrel, pin tumblers in said casing normally locking the barrel and journal together, said journal and knob having registering recesses for the reception of a key to aline the pin tumblers and allow the journal to move in the barrel, a locking plate in said casing having a notch to receive said tumbler casing and hold the barrel against movement, a tube mounted to slide in the sleeve, an arm rigidly connecting said tube and said plate, said inner knob having a central passage for the accommodation of the tube, a push button on the end of said tube, a coiled spring within the tube normally pressing said tube in a direction to release the plate from locked engagement with the tumbler casing, a frame straddling said sleeve, a spring exerting pressure on said frame, a

tongue on the frame constructed to engage in an opening in the tube and hold it in its inward position, and a push button connected to said frame, substantially as described.

16. The combination with a lock casing, of a latch bolt in the casing, laterally projecting pawls on said bolt, adapted to hold the bolt against inward movement, a plug projecting beyond the outer face of said latch bolt and adapted to move said pawls, an inner knob mounted to turn, an outer knob mounted to turn, cross heads operated by the respective knobs to move the bolt, and means connected with the inner knob for locking the outer knob, substantially as described.

17. The combination with a lock casing, and a partition therein having an opening, of a sliding latch bolt movable through said opening, means on the bolt preventing longitudinal movement until the bolt is operated by said first-mentioned means, said bolt holding means comprising pivoted pawls adapted to project laterally from the bolt and engage said partition, a plug projecting through the outer end of said bolt and adapted when moved inwardly to release said pawls, an inner knob mounted to turn, an outer knob mounted to turn, cross heads operated by the respective knobs to move the bolt, and means connected with the inner knob for locking the outer knob, substantially as described.

18. The combination with a casing, and a partition in the casing, having an opening therein, of a latch bolt mounted to slide in said opening, pivoted pawls on said bolt adapted to project laterally from the bolt and engage the partition preventing longitudinal movement of the bolt, an operating rod mounted to slide in the bolt, a stud on said rod engaging the pawls, a spring on said rod normally moving the lug to a position to hold the pawls in locking engagement with the partition, an inner knob mounted to turn, an outer knob mounted to turn, cross heads operated by the respective knobs to move the bolts, and means connected with the inner knob for locking the outer knob, substantially as described.

19. The combination with a casing, and a partition in the casing having an opening therein, of a latch bolt mounted to slide in said opening, pivoted pawls on said bolt adapted to project laterally from the bolt and engage the partition preventing longitudinal movement of the bolt, an operating rod mounted to slide in the bolt, a stud on said rod engaging the pawls, a spring on said rod normally moving the lug to a position to hold the pawls in locking engagement with the partition, and a removable plug secured to said rod and projecting through the outer end of said bolt, said bolt and said rod beveled at their outer ends, an inner knob mounted to turn, an outer knob mounted to turn, cross heads operated by the respective knobs to move the bolt, and means connected with the inner knob for locking the outer knob, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DAVID S. SENSENIG.

Witnesses EMANUEL H. BEAN, MARGARET POTTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

